TABLE 1.

Enterobacteriaceae isolates identified from external surface and gut homogenates of cockroaches trapped in different sites^a

Bacterial isolate	No. and type of cockroach (n = 115) in bacteria:
	P. americana (n = 87)						B. germanica (n = 21)						B. orientalis (n = 7)
	EH			GH			EH			GH			EH			GH
	Hospital	CC	House	Hospital	CC	House	Hospital	CC	House	Hospital	CC	House	Hospital	CC	House	Hospital	CC	House		Total
E. coli	11	8	2	15	3	2	0	2	0	0	2	0	2	1	0	2	0	0		50
K. pneumoniae	2	7	3	4	7	5	0	10	0	0	8	0	0	0	0	0	0	0		46
E. cloacae	6	1	2	1	3	2	0	5	0	0	7	0	0	0	0	0	1	0		28
Serratia marcescens	0	0	0	3	0	2	0	0	0	0	0	0	0	0	0	0	0	0		5
Citrobacter freundii	0	1	0	0	1	0	0	0	0	0	2	0	0	0	0	0	0	0		4
Providencia rettgeri	0	1	0	0	2	0	0	0	0	0	0	0	0	0	0	0	0	0		3
Citrobacter gillenii	0	0	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0		2
Citrobacter sedlakii	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0		2
Serratia rubidaea	0	0	0	0	0	0	0	1	0	0	1	0	0	0	0	0	0	0		2
Pantoea calida	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0		1
Leclercia adecarboxylata	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0		1
Total	20	18	9	23	16	13	0	19	0	0	20	0	2	1	0	2	1	0		144

^aEH, external homogenate; GH, gut homogenate; CC, collective catering.